Pump-valve.



W. WOLFE.

PUMP VALVE.

FILED JAN 1,293,284.. Patented Feb. 4,1919.

u :a l Alg.

unwmllmm w. f7 f. ruuumI-MIIIIWUIHIlr 26; l, a' I;

WILLIAM WOLFE, 0F CRESSON, PENNSYLVANIA..

ernten.

PUMP-veniva.

Lacasse. n

Speciication of Letters Patent.

Patenten nee. a, iai-e.

application med January s, 1917. serial no. 140,415.

To all 'whom it may concern:

Be it known that I, WILLIAM WOLFE, a citizen of the United States, residin at Cresson, in the county of Cambria and tate of Pennsylvania, have -invented new and useful Improvements in Pump-Valves, of which the following is a specication. f

he present invention relates to pump valves, and more particularly to valves for use in connection with mining pumps, in which it is desirable that ease of installation and replacement and economy in maintenance is secured.

It has for its object to provide a valve which is composed of few parts; whichpmay be readily installed in constricted areas; and in which the elements are so constructed and relatively-disposed as that a minimum repair cost may be secured.

In the drawings herewith, I have illusrated one physical embodiment of my invention, but it will be understood that this illustrative disclosure is not restrictive, for it is obvious that variations in structure within the range of mechanical skillv may be made without departing from the spirit of my invention.

In said drawings,`

Figure 1 is a view in side elevation ofmy improved valve.

Fig. 2 is a view in cross-section, of the valve shown in Fig. l, parts of the valve being shown in'elevation for clearness of v'ne illustration. y v

Fig. Sis a bottom-plan view.

Fig. i is a top plan view, the spring being omitted to more clearly show the construction.

VHaving reference to the drawin s by numerals, like numbers indicating like :parts in the several views, 10 indicates the valveseat section, formed, as clearly shown in Fig. 2, with a stepped outer perimeter, the stepped sections 11 and 12 being screwthreaded and separated by a ledge or landing 13 disposed at right angles to the plane of said screw-threaded sections.

Said seat section 10 is preferably, for

strength, provided with arches 14 which spring'from the inner periphery of the sect1on' andv join centrally in a boss or web 15. The arches 14 have their lower edges curved lor sloped upwardly toward -the orifices of ttle or no resistance y, or 1n the seat so asto ofl'e to flow which is, of;A the direction of the a upwardl w in Fig. 2, so that."

danger of clogging by reason of solid matter striking against bridging surfaces at right angles to the direction of flow is eliminated.

The upper surface of the reduced section 12 of the seat section 10 is at and forms-a smooth seat for .the valve member 16, which is preferably of rubber, although other materials may be substituted therefor. Said valve member 16 is of ste ped formation, having the lower section l? and the reduced upper section 18,. which is encircled and engaged by a` plate 19 of relatively heavy construction and recessedonits under side to receive the reduced section 18 of the valve member 16, the rim 20 of said plate 19 resting upon the extendedV rim of the lower section 17 of the valve member 16, as

`shown in Fig. 2.

By forming the valve member and its 'plate as shown, a construction is .secured in whlch the valve member 1s held against fleXure or d1stort1on,1nsur1ng al-y rigidly ways an accurate seating of the valve; suiicient weight is given to steady the movements of the valve; and wear ofthe valve section is uniform owing to the fact that the valve member if of soft materialis held in a condition of rigidity by its encircling and embracing plate.

It will be `observed thatC the depending rim 20, bearing upon the outstanding rim bounding this recess prevent- Ving side play and displacement of the lower free end of the spring. The said spring 21 is secured at its upper end to an anchor piece 23 removably mounted, preferably by a screw-thread connection, in the dome or cap-piece 24-o'fa spider formed of curved, radially disposed arms 25 united at their lower ends by a ring 26,-the whole forming al rigid spider which is of generally conelike conformation.. y The bottom ring 26 of the spider is thread- Ved interiorly and engages the upper threaded section'12'of the Seat member 10, so that, when assembled it upon the ledge 13 between the threaded @canons 11 and 12, It

will be observed that the ring 26 and its attached arms 25, all lie Within the circumferential area of the seat section 10 and that there are no projecting parts which extend outside the perimeter of the screw-threaded section 11. The advantage of this is that no special construction of pipe or casing to carry the valve is necessary. As indicated in dotted lines, Fig. 2,the valve Will engage any screw-threaded seat of the diameter of the valve-seat section 11, and no interference in its placing or removal is occasioned by parts projecting beyond the periphery of the seat section. l

This is of particu-lar advantage in connection with the installations for which this valve is designed, for the reason that the space Within which they lare installed is limited and it is desirable that special mountings and enlarged pipes or casings to accommodate them be avoided.

The anchor piece 23 is preferably formed, as shown, of conical shape, and is snugly .engaged by the u-pper coil or coils of the spring 21 Which is preferably of cone formation. The connement of the upper coils of the spring 21 in the manner shown prevents to a large degree any tendency of the spring to side lash or movement, and tends to connel it to direct movement axially of the valve and this coupled with the confinement of the lower coil of the spring in the recessed top of the plate 19 gives steadiness and accuracy to Ithe movements of the valve. i

The said anchor piece 23 is provided, in the illustrated embodiment herein, with a Spanner-socket 27 (see dotted lines Fig. 2) to receive any suitable ISpanner tool or Wrench for its removal and replacement.

It Will be seen (Figs. 1 and 2) that the outer faces 17 of the valve section 16 and the valve plate 19 are curved or coned to conform to the curvature of the spider arms 25, so that .Whilesecuring a compact construction the necessary maximum movement of the valve is permitted, this coincidence of curvature of the parts' permitting the valve to rise and fall in the spider Without interference or danger of januning.

From the foregoing', it Will be seen that I have provided a valve Which is composed of a minimum number of parts, which may be installed in a pipe or casing of ordinary construction and Without special mountings; in Which the valve parts proper are so constructed and assembled as to insure accurate seating and effective operation with a minimum Wear `on the parts; and iny Which danger of clogging is much reduced.

Such changes as may be made within the skill of the mechanic in departing from the embodiment of mty invention herein disclosed are, of course, Within the range of my invention.

What I claim is:

1. In a valve, the combination of a seat `member having a threaded exterior surface,

a valve mounted thereon, a valve retaining spider removably secured to sai-d seat member and lying wholly Within the circumferential area thereof, a valve seating spring of conical formation, and an anchor piece of conical lformation mounted in the apex of said spider and closely engaging the end coil of said conical spring 'to control its movements and prevent side lash thereof during operation of the valve,

2. In a valve, the combination of ar seat member, a valve mounted thereon vand having its upper face dished to provide a circular retaining rib, a valve retaining spider so coupled to said seat member as to lie Wholly Within the circumferential area thereof, a

' valve seating spring of conical formation the,

larger end ofv which loosely engages the dished upper face of said valveand is held against sidevvise movement by said circular rib, and a conical anchor piece removably secured to lthe base'of said spider and engaged by the coil of the smaller end of said spring so as to form an extended bearing therefor and prevent undue side lash of the spring and valve.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

WILLIAM WO'IJFE. Witnesses:

WM. P. ROBERTS, SAMUEL T. OLDHAM. 

